JPH0220418Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a method for positioning a stay on a resonator body for supporting a resonator on a body side member, which is used to reduce intake noise, exhaust noise, etc. in automobiles. Regarding structure.

[Prior Art] In order to reduce intake noise and exhaust noise, a coexistence chamber is formed between an inner tube and an enclosed outer tube provided around the inner tube, and the sound passing through the inner tube is reduced. A resonator is known that absorbs and reduces energy in a resonant chamber via a resonant tube.

This resonator is normally attached to a body side member via a stay, and the positioning structure of the stay is as shown in FIGS. 8 and 9, for example. The figure shows a stay for an intake resonator, and 1 indicates the resonator body. A recess 2 is formed on the side surface of the resonator main body 1, and a resonator stay 4 extending to a mating body-side member 3 is attached within the recess 2. The resonator stay 4 is assembled to the resonator body 1 via bolts 5 and washers 6.

[Problems to be solved by the invention] However, the conventional structure as described above has the following problems.

First, in order to set the resonator body 1 at a predetermined position relative to the body side member 3, the resonator stay 4 must be set at a predetermined position relative to the resonator main body 1.
It must be fixed in a predetermined direction, and for this purpose, when assembling the resonator stay 4 to the resonator body 1, it is necessary to set it in a jig and tighten the bolt 5, which requires a lot of assembly man-hours. There's a problem.

In addition, the resonator stay 4 is connected to the resonator body 1.
Since it is only fixed with bolts 5 to There is also the problem that if it is hit or subjected to vibration during transportation, it may rotate and its position may shift as shown in FIG.

In order to solve the above-mentioned problems, the present invention has developed a resonator stay positioning structure that enables predetermined positioning without setting a jig and that prevents the assembled stay from shifting its position during transportation. The purpose is to provide.

[Means for Solving the Problems] A resonator stay positioning structure of the present invention that meets this purpose is a resonator stay mounting structure that is attached to a resonator body and supports the resonator body with respect to a body side member. A recessed portion into which the resonator stay is inserted is provided on one side, and surfaces of the resonator stay in the direction along the insertion direction of the resonator stay are respectively in contact with surfaces in the direction along the insertion direction of the resonator stay inserted into the recessed portion. This forms a positioning surface that determines the position of the resonator stay in the direction perpendicular to the insertion direction, and the bottom surface of the recess determines the position of the resonator stay in the insertion direction by coming into contact with the tip end surface of the resonator stay inserted into the recess. It is made of a material with a positioning surface formed thereon.

[Function] In such a positioning structure, the resonator stay is simply inserted until its tip surface contacts the positioning surface formed on the bottom surface of the recess, and then
It is fixed to the resonator body with bolts etc. The surface of the resonator stay in the direction along the insertion direction of the resonator stay has a surface along the direction of insertion of the resonator stay,
For example, positioning surfaces are formed on the top and bottom surfaces, so simply inserting the resonator stay into the recess along these positioning surfaces determines the position in the direction perpendicular to the insertion direction. Since the surface of the resonator stay is held by the positioning surface, displacement in the direction perpendicular to the insertion direction is prevented. In addition, since a positioning surface is also formed on the bottom of the recess, the position of the resonator stay in the insertion direction can be determined by simply inserting the resonator stay until it contacts this positioning surface, and this contact can be maintained as it is by tightening the bolt. Since it is held, displacement in the insertion direction after assembly is also prevented.

In this way, the predetermined positioning can be achieved simply by inserting the resonator stay into the recess without setting a jig, and after assembly, the resonator stay is held by the three positioning surfaces of the recess in addition to being fastened with bolts. Therefore, the fixing strength is increased and the once determined position is maintained with high precision.

[Embodiments] Hereinafter, preferred embodiments of the resonator stay positioning structure of the present invention will be described with reference to the drawings.

1 to 3 show a positioning structure for a resonator stay according to an embodiment of the present invention, and show a case where the present invention is applied to an intake resonator. In the figure, 10 indicates a resin resonator body, and the resonator body 10 is
It is installed in a predetermined position on the vehicle.

A recess 11 that opens laterally is formed on one side of the resonator body 10. One end of the resonator stay 12 is inserted into this recess 11, and the other end of the resonator stay 12 is
It extends to a body side member 13 as a counterpart member and is fixed to the body side member 13 via an elastic member 14 for vibration absorption.

The recess 1 is formed on the upper and lower surfaces of the resonator stay insertion direction in the resonator stay, respectively.
By abutting the upper and lower surfaces of the resonator stay 12 inserted into the resonator stay 1
A positioning surface 15 is formed to determine the vertical position of 2. In this embodiment, the positioning surface 15 is formed as the upper surface and the lower surface of a protrusion 16 extending in the insertion direction of the resonator stay 12.
Two strips 6 are formed on the upper and lower surfaces of the recess 11, respectively.

The bottom side of the recess 11, that is, the resonator stay 1
A positioning surface 17 that determines the position of the resonator stay 12 in the insertion direction by coming into contact with the front end surface of the resonator stay 12 inserted into the recess 11 is formed on the surface of the resonator stay 12 on the front end side in the insertion direction. The positioning surface 17 also functions as a stopper for inserting the resonator stay 12, and is formed as the tip surface of the protrusion 18 in this embodiment.

The resonator stay 12 is provided with holes 19 for inserting bolts (two holes in this embodiment), and a nut (or boss portion) 20 for forming a female thread is fixed to the back side of the hole 19. ing. The resonator stay 12 is fixed to the resonator body 10 by inserting a bolt 21 into a hole 19 and fastening it to a nut 20.

Note that 22 indicates a hole for inserting a bolt on the side of the resonator main body 10, and 23 indicates a bush for fixing the position of the bolt 21.

The operation of the embodiment device configured as described above will be explained below.

4 to 6, the resonator stay 12
Shows the assembled state. FIG. 4 shows the state before assembly, and the resonator stay 12 is inserted into the recess 11 of the resonator body 10 in the direction of the arrow.

FIG. 5 shows the point in time when the resonator stay 12 begins to be inserted into the recess 11 of the resonator body 10.
The resonator stay 12 is inserted while its upper and lower surfaces are in contact with positioning surfaces 15 formed in the recess 11 and guided. Due to this contact, the vertical position of the resonator stay 12 with respect to the resonator body 10 is determined naturally by simply inserting the resonator stay 12 into the recess 11.

The resonator stay 12 is inserted while being guided by the positioning surface 15 until its distal end surface abuts the positioning surface 17. After insertion, as shown in FIG.
The assembly of the resonator stay 12 to the resonator body 10 is completed. When the distal end surface of the resonator stay 12 comes into contact with the positioning surface 17, the hole 19 of the resonator stay 12 and the hole 22 on the resonator body 10 side are aligned, and the resonator stay 12 can be simply inserted into the recess 11. ,
The resonator stay 12 is naturally set at a predetermined position relative to the resonator body 10.

Therefore, the resonator stay 12 can be inserted into the resonator body 1 simply by being inserted into the recess 11.
0 in the vertical direction as well as in the insertion direction, eliminating the need for conventional jigs.
Moreover, after assembly, the position is fixed by the three positioning surfaces 15 and 17 as well as by the bolts 21, so that the fixing strength is improved and the position of the resonator stay 12 against external force is improved. Misalignment is prevented. In particular, if the positioning surfaces 15 are formed in two upper and lower rows as in this embodiment, the resonator stay 12 is securely fixed also in the torsional direction, so that its positioning accuracy and fixing strength are further improved.

Next, FIG. 7 shows another embodiment of the present invention.

In this embodiment, no protrusions are provided on the upper and lower surfaces of the recess 31 of the resonator body 30, and the recess 31
The upper and lower surfaces 32, 33 themselves are configured as positioning surfaces. The fastening position of the bolt 34 is set at one or both of the upper and lower surfaces.
As the length of the resonator stay 35 becomes longer, the vibration at the tip on the body side becomes a large force that acts on the tightening position. Strength is ensured, and positional displacement etc. are prevented even under large external forces. Other configurations and operations are similar to those of the previous embodiment.

In each of the above embodiments, the positioning surfaces in the direction along the resonator stay insertion direction are formed on the upper and lower surfaces of the recess, but the present invention is not limited to this. For example, the positioning surfaces may be formed in the direction perpendicular to the plane of the paper in FIG. It may also be formed. In other words, the positioning surface can be set depending on the direction of the external force applied to the resonator stay. Furthermore, although each of the above embodiments has been described with respect to an intake resonator, the invention is not limited to this, and the present invention can be applied to all other resonators of the same type provided in an exhaust system or the like.

[Effects of the invention] As explained above, when using the resonator stay positioning structure of the invention, the resonator stay can be positioned naturally by simply inserting it into the recess formed in the resonator body.
It is possible to eliminate the need for a conventional positioning jig, simplify the assembly, and reduce the number of assembly steps.

In addition, since the position of the resonator stay is maintained by each positioning surface even after assembly, it is possible to prevent the resonator stay from shifting due to external forces applied during transportation, etc.
Another advantageous effect is that the strength of fixing the resonator to the resonator body can be improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a resonator stay positioning structure according to an embodiment of the present invention, FIG. 2 is a partial front view of the device shown in FIG. 1, and FIG. 3 is a partial front view of the device shown in FIG. 2.
Longitudinal cross-sectional views along the line, Figures 4 to 6 are 1
FIG. 7 is a partial front view of a resonator stay positioning structure according to another embodiment of the present invention, and FIG. 8 is a perspective view of a conventional resonator stay positioning structure. , FIG. 9 is a side view of the device shown in FIG. 8, and FIG. 10 is a perspective view showing a misaligned state of the resonator stay in the device shown in FIG. 8. 10, 30... Resonator body, 11, 31...
... Recessed portion, 12, 35 ... Resonator stay, 13
...Body side member, 15, 32, 33... Vertical positioning surface, 16... Convex strip, 17... Insertion direction positioning surface, 18... Protrusion, 21, 34... Bolt.

Claims (1)

[Scope of utility model registration request] In a positioning structure for a resonator stay that is attached to a resonator main body and supports the resonator main body with respect to a body side member, a recess into which the resonator stay is inserted is provided on one side of the resonator main body, and the resonator stay is inserted in the resonator stay insertion direction of the resonator main body. A positioning surface is formed on the surface along the resonator stay to determine the position of the resonator stay in the direction perpendicular to the insertion direction by abutting on the surface along the insertion direction of the resonator stay to be inserted into the recess. A positioning structure for a resonator stay, characterized in that a positioning surface is formed on the bottom surface to determine the position of the resonator stay in the insertion direction by coming into contact with the tip end surface of the resonator stay inserted into the recess.